The fan is spinning. I tested it with a measuring cup with a similar glass thinness and base. My flask is in the mail.
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After 2-3 weeks you'll get everything out of the raspberries you can get. After that the flavor will start to fade slightly.
One thing to keep in mind with raspberries is that they will completely break down in beer and leave you with small bits of skin and seed that will clog your racking and bottling equipment and get into your bottles if you aren't careful. It's a real PITA to work with. You will need to secure something over the end of your racking cane/autosiphon to keep all that stuff in the fermentor.
I made a Saison that i added fresh raspberries to. I tossed them in whole to the secondary after a 5 week primary using WLP670. I used a ratio of 1/2 lbs per gallon and ended up with a nice pink color from the berries with a light/moderate aroma and flavor. The beer ended up winning 1st place in the fruit beer category in this years Boston Homebrew Competition.
What style beer are you planning on making?